Windows Live Vision
This mashup was forwarded to me today which maps on Virtual Earth all the recently updated Live Spaces pages. Pretty nice example of how you can pull this information together. In fact you could do something pretty similar with Popfly with hardly any effort at all.
Check out Windows Live Vision.
Also of note was something one of our Virtual Earth partners sent to me this week where they have taken hi-res images of interesting locations around London and mapped them on Virtual Earth. Cool work.